Sound Tests In Flats (1950)

Sound tests in flats in Walthamstow, London. M, S two men walking to van. C, U men entering van. C, U sign on side of van: Department of Scientific and Industrial Research. M, S woman in room opening door to man with microphone he is a sound engineer. He places microphone in centre of room. C, U two men with mike. M, S two sound engineers entering room upstairs carrying case of sound effects instruments. They place the instruments on floor. C, U man speaking into intercom (natural sound): Could we have footsteps machine, please . We hear reply: C, U footsteps machine at work (makes thumping sound on floor). C, U two men looking at machine in action. M, S sitting in chair down stairs knitting, she looks up. C, U lampshade shaking. M, S, inside van, sound engineers looking at instruments. C, U dials. M, S engineers working. M, S footsteps machine working. M, S instruments showing oscillation. M, S man walking from instruments to table. C, U man writing notes. C, U footsteps machine. C, U m